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JavaScript - How To Use Ajax To Call Json
hihi i am doing a project regarding ajax
how am i going to call the title because normally if you call start year is like var detail = eval.... then for loop it inside should be var start year="" startyear += ...[i].startyear something like this but how am i going to call the title inside the note? Code: {
"infos": {
"info": [
{
"startYear": "1900",
"endYear": "1930",
"timeZoneDesc": "daweerrewereopreproewropewredfkfdufssfsfsfsfrerewrBlahhhhh..",
"timeZoneID": "1",
"note": {
"notes": [
{
"id": "1",
"title": "Mmm"
},
{
"id": "2",
"title": "Wmm"
},
{
"id": "3",
"title": "Smm"
}
]
},
"links": [
{ "id": "1", "title": "Red House", "url": "http://infopedia.nl.sg/articles/SIP_611_2004-12-24.html" },
{ "id": "2", "title": "Joo Chiat", "url": "http://www.the-inncrowd.com/joochiat.htm" },
{ "id": "3", "title": "Bake", "url": "https://thelongnwindingroad.wordpress.com/tag/red-house-bakery" }
]
}
Similar TutorialsHi, I am hoping I just need to be pointed in the right direction with this. I have Page1. When Page1 body onloads it uses Ajax to call PartA Within PartA I have a message board so members can write messages which will be sent to my database in PartA[1] and immediately posted for view on to PartA[2]. As I want to have my request to the server updating regularly I want to have PartA[2] on a timed loop to refresh - I do not need the content of PartA[1] to refresh. So the order of events would look like this: Page1 | onload call | v PartA / \ V V PartA[1] PartA[2] (loads once) (constantly refreshes) What I am not sure about is that I have <body> and <head> attributes in Page1 only. I have already used my body onload to call PartA (and can't use it to call PartA[2] before PartA has loaded anyway). I do not want the user to have to click a button or do anything to call up PartA[2]. So my question is how would I get PartA[2] to automatically load within PartA? I hope I have made this clear, but if I haven't let me know and I will try again. Right for day's i've searching for a jQuery/js/ajax script that opens like facebooks box where you can delete things update posts and so on... But i don't want that facebox thing i want a tut where i can buy things that will insert into the database and delete things and sooo on... I've made the box i just want the script for it.... I'm not good with js/jQuery/ajax.... Thanks. I'm poking in the blind with javascript and hope that you can help with this issue. A javascript function is making a call to an external php file, which checks the compares the current time with a time stored in a mysql database. If a certain time passes, the php will send back instructions to redirect the user to a different page. The issue is that the page refreshes every time the is javascript function is executed. This resets any forms, or videos that the user is watching on the page. Here is the relevant code: Code: function checkTimer()
{
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
window.location.href = xmlhttp.responseText;
}
}
xmlhttp.open("POST","php/5minforpage10.php",true);
xmlhttp.send();
}
window.setInterval(checkTimer,15000);
Is there a way to achieve the goal of checking the time against the server time (via the php code) without refreshing the page? Thanks kindly! i'm doing the following on a select box to load the next select box (in a td with the id) if I look at the html returned by the ajax call I get PHP Code: <select name=optionvalue /><option value='test 1'>test 1</option><option value='test 2'>test 2</option><option value='test 3'>test 3</option></select> but it's showing as the select box and then test 1test 2test 3 my javascript code is PHP Code: function Loadoptionvalueselect() { //alert("here"); urltoajax = "getoptionsvaluesselect.asp?1=1" strarea = document.getElementById('optionid').value; urltoajax = urltoajax + '&optionid=' + strarea urltoajax = urltoajax + '&rnd=' + Math.round(Math.random() * 10000) // alert(urltoajax); $.ajax({ url: urltoajax, cache: false, success: function(html) { $("#troptionvalue").html(html); } }); } any ideas what could be causing this? OK, I've just been working with kwyl, trying to intergrate a like/dislike script to her site. There was an original script, and although bugged, it's almost the What works The user clicks the like/dislike icon. Ajax sends a request to PHP: Either the like/dislike gets inserted into the database. OR, if the user has already liked/disliked that post, an alert error gets returned. What doesn't work If you click to like/dislike a post, it won't appear (the current count is in brackets beside the icons) unless the page is refreshed. How would I use this along side Ajax for auto update? $data = mysql_fetch_object(mysql_query('SELECT `like`,`unlike` FROM posts WHERE id="'.$row['id'].'"')); It's used he Code: $data = mysql_fetch_object(mysql_query('SELECT `like`,`unlike` FROM posts WHERE id="'.$row['id'].'"'));
?>
<br />
<div class="vote">
<a href="javascript:;" onclick="doAction('<?php echo $row['id']; ?>','unlike');">
<input type="image" name="submit" src="images/down.gif" /></a>
(<span id=""><?php echo $data->unlike;?></span>)
<a href="javascript:;" onclick="doAction('<?php echo $row['id']; ?>','like');">
<input type="image" name="submit" src="images/up.gif"></a>
(<span id=""><?php echo $data->like;?></span>)
I hate javascript and this is utterly driving me up the wall. Any help would be much appreciated. If you need more informaton/code please ask. Hi there How to send data from a text feild in GET method using an AJAX call... I already have codes working Code: to = "interfaces/add_department.jsp";
parm = "name="+name.value+
"&name2="+name2.value;
alert(parm)
post(to,parm,callBackFunctionForAddDepartment);
Here the variable name may have "me&you" or "me you" like that.... so how do i encode it so that it reaches properly? Hi, I have a form which goes to my insert page which inserts the data into the table. Except I didn't want to do a redirect to another page so I thought I would do an Ajax call. Both pages work until I change it to an ajax call. I am pretty certain that it is because I took out the <form action="insert.php"> because otherwise the page would redirect but if that is the case I don't know my way around it and if it isn't the problem I'm not sure what is. But here is my code: Form: Code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">
<html><head>
<script type="text/javascript">
function loadXMLDoc(File,ID){
if (window.XMLHttpRequest) {
xmlhttp=new XMLHttpRequest();
}
else {
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.open("POST",File,true);
xmlhttp.onreadystatechange=function(){
if (xmlhttp.readyState==4 && xmlhttp.status==200){
document.getElementById(ID).innerHTML=xmlhttp.responseText;
}
}
xmlhttp.send();
}
</script>
</head>
<body>
<div id="txtHint">
<form action="" method="post"/>
<div class="scroll">
<textarea rows="6" cols="60" class="input" name="para1" required="required" onclick="clearMe(this)">
Insert Paragraph 1
</textarea>
</div>
<br />
<br />
<div class="scroll">
<textarea rows="6" cols="60" class="input" name="para2" onclick="clearMe(this)">
Insert Paragraph 2
</textarea>
</div>
<br />
<br />
<input type="submit" value="Submit" onclick="loadXMLDOC('insert.php','txtHint')" />
</form>
</div>
</body>
And my insert.php is: Code: <?php
$con = mysql_connect("localhost","user","password");
if (!$con){
die('Could not connect: ' . mysql_error());
}
mysql_select_db("mydb", $con);
$sql="INSERT INTO abc (para1, para2, date, time)
VALUES
('{$_SESSION['para1]}', '{$_POST['para2']}',CURDATE(), CURTIME())";
mysql_query($sql) or die('Error: ' . mysql_error());
mysql_close($con)
?>
0 down vote favorite I have been struggling with this for some time.. I searched around but didnt get a solution yet. This is only an issue on production server. In my development environment, everything works just fine. I am using JQuery/Ajax to update product information based on product's Color attribute. for example, a product has A and B color, the price for color A is different from color B. When user choose different color, the price information is updated as well. What I did is to first add a javascript function: function updateProductVariant() { var myval = jQuery("#<%=colorDropDownList.ClientID%>").val(); jQuery.ajax({ type: "POST", url: "/Products.aspx/GetVariantInfoById", data: "{variantId:'" + myval + "'}", contentType: "application/json; charset=utf-8", dataType: "json", success: function (response) { var obj = jQuery.parseJSON(response.d); jQuery("#<%=lblStockAvailablity.ClientID%>").text(obj.StockMessage); jQuery(".price .productPrice").text(obj.CurrentPrice); jQuery(".price .oldProductPrice").text(obj.OldPrice); } }); } Then I can register the dropdown list's 'onclick' event point to function 'updateProductVariant' GetVariantInfoById is a Web method in the codebehind, its also very straightforward： [WebMethod] public static string GetVariantInfoById(string variantId) { int id = Convert.ToInt32(variantId); ProductVariant productVariant = IoC.Resolve<IProductService>().GetProductVariantById(id); string stockMessage = productVariant.FormatStockMessage(); StringBuilder oBuilder = new StringBuilder(); oBuilder.Append("{"); oBuilder.AppendFormat(@"""{0}"":""{1}"",", "StockMessage", stockMessage); oBuilder.AppendFormat(@"""{0}"":""{1}"",", "OldPrice", PriceHelper.FormatPrice(productVariant.OldPrice)); oBuilder.AppendFormat(@"""{0}"":""{1}""", "CurrentPrice", PriceHelper.FormatPrice(productVariant.Price)); oBuilder.Append("}"); return oBuilder.ToString(); } All these works fine on my local box, but if i upload to the production server, catching the traffic using fiddler, /Products.aspx/GetVariantInfoById becomes a 302 Object moved Object moved to here. On my local box, HTTP/1.1 200 OK Server: ASP.NET Development Server/10.0.0.0 Date: Thu, 03 Mar 2011 09:00:08 GMT X-AspNet-Version: 4.0.30319 Cache-Control: private, max-age=0 Content-Type: application/json; charset=utf-8 Content-Length: 117 Connection: Close But when deployed on the host, it becomes HTTP/1.1 302 Found Proxy-Connection: Keep-Alive Connection: Keep-Alive Content-Length: 186 Via: 1.1 ADV-TMG-01 Date: Thu, 03 Mar 2011 08:59:12 GMT Location: http://www.pocomaru.com/Products.asp...d/default.aspx Server: Microsoft-IIS/7.0 X-Powered-By: ASP.NET then of course, then it returns 500 error title>Unknown web method GetVariantInfoById/default.aspx. Parameter name: methodName Can someone please take a look? I think its some configuration in the production server which automatically redirects my webservice call to some other URL, but since the product server is out of my control, i am seeking a local fix for this. Thanks for the help! I have a very large json file, and inside of that json file is an array. I would like to use JavaScript to take that json as an argument, parse through the json and only take certain elements from it and put it into a new json file, below is an example of what I mean: Code: {
"contextType": "Account",
"preferences": null,
"custodianCode": null,
"data": [{
"id": "0",
"account": "11111111",
"field2": true,
"field3": false,
"field4": "BROK",
"field5": "Broker",
"field6": "1",
"field7": "Cash"
},{
"id": "1",
"account": "222222222",
"field2": true,
"field3": false,
"field4": "BROK",
"field5": "Broker",
"field6": "1",
"field7": "Cash"
}]
}
And I want to pull from that and get something like this as a new json Code: {
"newArray": [{
"id": "0",
"account": "11111111",
"field2": true,
"field3": false,
"field4": "BROK",
"field6": "1"
},{
"id": "0",
"account": "222222222",
"field2": true,
"field3": false,
"field4": "BROK",
"field6": "1"
}]
}
Also the file is local to my computer and can be outputted locally as well, I am trying to use node.js and JavaScript this is what I have so far Code: var json = require('./simple.json');
var keeperFields = ["id", "account", "field2", "field3", "field4", "field6"];
var newJSON = {newArray: [] };
var i;
var fields;
for (i = 0; i < keeperFields.length; i++) {
for (fields in json) {
if (json.hasOwnProperty(keeperFields[i])) {
newJSON.newArray.push(keeperFields[i]);
}
}
}
console.log(newJSON);
This is just a small example the real json file is huge with thousands of lines. Any help or suggestions are appreciated! This current solution is giving me a console log of { newArray: []} instead of the expected result above Hello all, I thought I'd share something that I don't see talked about much on the forums. I've been doing a bunch of AJAX development at work. We're really strapped for processing speed on our client (we build the machines our clients use) and therefore we've needed to find ways of speeding everything up. One of the things we decided on within the first week of our current project was to completely scrap XML in favor of JSON for sending data back and forth. JSON is JavaScript Object notation. Many of you have already seen it, it looks like this: Code: {'prop1' : 'someValue', 'prop9' : 5};
That defines an object with 2 properties, prop1 and prop9, with the respective values "someValue" and 5. Compare that to XML: Code: <obj> <prop1 value="someValue" type="String" /> <prop2 value="5" type="Integer" /> </obj> That's a bit more bloated, maybe not too noticeable, but the example is a small one. If you take large amounts of data, and multiple objects, XML can get incredibly bloated, and bloat on the wire slows down your app. That's the first reason we switched. The second reason we switched is that we save time on the processing. We all know what it's like to get at XML data. Import the document, get the node, get the value, get the next node, get the value. And building XML documents can take just as long: Create document, create root node, create node, create attribute node, set value, append child, repeat... All that processing for something so simple. JSON on the other hand is a subset of javascript, so check this out. Code: var data = "{'prop1':'someValue', 'prop2':5}";
var obj = eval("(" + data + ")");
alert(obj.prop1); // *** Alerts 'someValue' ***
The string fits right into JavaScript in one function call. Granted, eval can be expensive, but if you test this out yourself, it's far cheaper than building and deconstructing XML in the JavaScript engine. There are 2 simple JSON parsing libraries that we use in development: JSON.php and json.js; these provide the necessary functions to serialize any PHP object into JSON, and serialize any JavaScript object into JSON. You can get them at the links below. We are also following the specification for JSON-RPC, defined in the last link below. We found this to be incredibly fast when compared to XML, and we haven't regretted it yet. Granted, we're not doing full blown web services where the the javascript modifies itself based on the service's self-definition, complete with namespaces and function signatures, but we transfer a lot of data quickly and efficiently to provide our users with the best experience possible. I recommend examining this further if you do AJAX development. Hopefully this helped somebody. http://json.org/ http://mike.teczno.com/json.html http://json-rpc.org/ And now for the "VS" part of this post: Anyone with experience in using both XML and JSON that wants to argue the mertis of either technique? I support JSON for almost all AJAX applications currently. I haven't found a good reason to use XML, and the negatives for using XML (bloat and processing speed) have currently knocked it completely from my "viable options" list. Anyone care to discuss? I'm trying to get a return of Code: [ ["red","green","blue"] ,["blue","red","green"] ] from a text file that contains Code: red,green,blue blue,red,green Using the following function Quote: Originally Posted by Old Pedant Code: function WRITE_FILE_AS_JSON(file)
{
fso = Server.CreateObject("Scripting.FileSystemObject");
myPath=Server.MapPath("timecards/" + file);
if(!fso.FileExists(myPath))return;
myfile = fso.OpenTextFile( myPath, read);
var lines = myfile.readAll().split("\n");
Response.Write("[\n");
for ( var i = 0; i < lines.length; ++i )
{
Response.Write(' ' + (i >0 ? ',' : '' ) + '["' + lines(i).replace(/\,/g,'","') + '"]\n');
}
Response.Write("]\n");
myfile.Close();
Response.End();
}
The darn thing keeps returning Quote: 500 (Internal Server) Error as a result of the line Response.Write(' ' + (i >0 ? ',' : '' ) + '["' + lines(i).replace(/\,/g,'","') + '"]\n'); And I don't know how to fix that line... I am making a dynamic google map and need to pass in a JS Object that has latitude, longitude, address, name, and a link. The JS Object will be getting those values from a DB and may have up to 15 recordsets. I need to know how to separate that out into it's entities to include in the Map API regardless of how many recordsets there are.
hello i am using a json file to import some content into a div like this: Code: $.getJSON('json/main_profile.json', function(data) {
$('#info_title').html(
'<h1>' + "General Information " + '</h1>'
);
});
but the problem appears when i try to replace the json file with a url, like this: Code: $.getJSON("http://interfaces-server.insource.local/users/145198", function(data) {
$('#info_title').html(
'<h1>' + "General Information " + '</h1>'
);
});
why works with the file but not with the link?? thanks hey guys im trying to create this script which will show array depending on what option has been selected on the select box...but the only thing being returned is "unidentified"....can anyone explain where i am going wrong please...thank you Code: <!DOCTYPE html>
<html>
<head>
<script type="text/javascript" src="/ajax/jquery/libary/jquery.js"></script>
</head>
<body>
<?php
$game_type = array();
$division = array();
if ($_POST['game'] == 1)
{
$game_type[] = array('value' => '1',
'text' => 'TDM'
);
$game_type[] = array('value' => '1',
'text' => 'CTF'
);
$division[] = array('value' => '1',
'text' => 'Divison 1'
);
}
elseif ($_POST['game'] == 2)
{
$game_type[] = array('value' => '1',
'text' => 'CTF'
);
$division[] = array('value' => '1',
'text' => 'Divison 2'
);
}
json_encode($game_type);
json_encode($division);
?>
<form>
<script>
$(document).ready(function(){
$("select#game").change(function(){
var post_string = "game=" + $(this).val();
$.ajax({
type: 'POST',
data: post_string,
cache: false,
dataType: 'json',
url: 'json.php',
timeout: '2000',
error: function() {
alert("Error has occured");
},
success: function(data) {
$.each(data, function(i, j){
var row = "<option value=\"" + j.value + "\">" + j.text + "</option>";
$(row).appendTo("select#sub_category");
});
}
});
});
});
//$('#game_type').html('<input type=\"checkbox\" value=\"test\" /> TDM');
//$('#division').html('<input type=\"checkbox\" value=\"test\" /> Division 1');
</script>
<select name="game" id="game">
<option value=""></option>
<option value="1">Counter Strike</option>
<option value="2">COD</option>
</select>
<div id="game_type">
</div>
<div id="division">
</div>
<select name="sub_category" id="sub_category">
<option value="">-- Select First Value --</option>
</select>
</form>
</body>
</html>
All, Say I have the following code: Code: <!DOCTYPE html>
<html>
<head>
<style>img{ height: 100px; float: left; }</style>
<script src="http://code.jquery.com/jquery-1.7rc2.js"></script>
</head>
<body>
<div id="images">
</div>
<script>
$.getJSON("http://api.flickr.com/services/feeds/photos_public.gne?jsoncallback=?",
{
tags: "cat",
tagmode: "any",
format: "json"
},
function(data) {
$.each(data.items, function(i,item){
$("<img/>").attr("src", item.media.m).appendTo("#images");
if ( i == 3 ) return false;
});
});</script>
</body>
</html>
This came from the jQuery website. What I would like to do is change the link to something like this: https://graph.facebook.com/me/friend...ss_token=12345 The data that comes back is something like: Code: {
"data": [
{
"review_comment": "Here is a comment",
"id": "12"
},
{
"review_comment": "Testing With more",
"id": "34"
},
{
"review_comment": "Third comment",
"id": "643"
},
{
"review_comment": "More Comments",
"id": "120"
},
{
"review_comment": "Testing",
"id": "3455"
}
]
}
What I would like to do is basically read all of the review_comment tags and basically rotate these to display them on the webpage. So have "Here is a comment" be displayed for like 10 seconds and then fade out and have "Testing with More" fade in and be displayed for another 10 seconds etc. What is the best way to do this? I'm not sure how to change my JSON code above to acheive this. Would I need to basically put the comments in a div and then use jQuery to fade in the divs in and out? Any help you could provide would be greatly appreciated!! Hi I have some JSON strings and I want to embed it into my website. The problem is that I don't know how to parse JSON string data into html code. After a long search it seem that there is just a few references and manuals about JSON. Could someone explain to me how to use this function and also with as many examples as possible for understanding, how to put it into html page. Thank You I've been using the JSON.stringify method to convert my JSON object to a string to pass via AJAX but I've read now that it is not supported in most browsers. What then should I use?
the "count" field/value on this JSON example for the MarkerClusterer app http://google-maps-utility-library-v.../src/data.json http://gmaps-utility-library.googlec.../examples.html i am trying to produce a similar JSON result and i cant figure out where their "count" variable is calculated at 10785236 for... but the following does not work Code: var data = { "count": 2,
"photos": [{"photo_id": 1, "photo_title": "testing", "photo_url": "http://www.site.com/photo/522084", "photo_file_url": "http://www.site.com/avatars/test.jpg", "longitude": -97.6765157, "latitude": 31.1482230, "width": 500, "height": 350, "upload_date": "7 September 2010", "owner_id": 1, "owner_name": "b747fp", "owner_url": "http://www.site.com/user/1"}
,
{"photo_id": 2, "photo_title": "testing", "photo_url": "http://www.site.com/photo/522084", "photo_file_url": "http://www.site.com/avatars/test.jpg", "longitude": -118.4104684, "latitude": 34.1030032, "width": 500, "height": 350, "upload_date": "7 September 2010", "owner_id": 4, "owner_name": "test", "owner_url": "http://www.site.com/user/4"}
]
}
I have been able to parse a JSON feed before but forwhatever reason this time around I am having a hell of a time getting it working. Here is where I am at right now. So far the script dosn't output anything. Code:
<table width="100%" border="0" cellspacing="0" cellpadding="10">
<script>
xhttp=new XMLHttpRequest();
xhttp.open("GET","http://biz104.inmotionhosting.com/~cox7co5/api/get_category_posts/?id=5",false);
xhttp.send("");
json_data=xhttp.responseText;
var parsed_data = eval('('+json_data+')');
var slug="stuff"
for (i=0;i<parsed_data.count;i++) {
document.write("<tr><td><a href=\"#\" class=\"showlist\">"+parsed_data.posts[i].title+"</a></td><tr>");
}
</script>
</table>
I am currently working on a project that requires pretty large bits of jQuery (atleast for me) and once I get this function working I can solve more required functions but I have problems getting this to work. Basically what im trying to do is, when a link is clicked (within a certain div) it reads out the class of that link and searches within XML or JSON for the title and then finds the description within that record. I hope someone is able to point to the right direction, Thanks in advance, Mehk. |
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